Ask Miles, our Setup AI that’s been trained on the F1ULTRA R5 Pro.
Setups
Gearing
Stock gearing for the Exotek F1ULTRA R5 Pro, with common pinions and their ratios.
| Pinion | Spur ÷ pinion | FDR | Rollout |
|---|---|---|---|
| 26T | 3.31 | 3.31 | 58.9 mm |
| 27T | 3.19 | 3.19 | 61.2 mm |
| 28T | 3.07 | 3.07 | 63.4 mm |
| 29T | 2.97 | 2.97 | 65.7 mm |
| 30T | 2.87 | 2.87 | 67.9 mm |
| 31T | 2.77 | 2.77 | 70.2 mm |
| 32T | 2.69 | 2.69 | 72.5 mm |
| 33T | 2.61 | 2.61 | 74.7 mm |
| 34T | 2.53 | 2.53 | 77.0 mm |
| 35T | 2.46 | 2.46 | 79.3 mm |
| 36T | 2.39 | 2.39 | 81.5 mm |
| 37T | 2.32 | 2.32 | 83.8 mm |
| 38T | 2.26 | 2.26 | 86.1 mm |
| 39T | 2.21 | 2.21 | 88.3 mm |
| 40T | 2.15 | 2.15 | 90.6 mm |
| 41T | 2.10 | 2.10 | 92.9 mm |
| 42T | 2.05 | 2.05 | 95.1 mm |
| 43T | 2.00 | 2.00 | 97.4 mm |
| 44T | 1.95 | 1.95 | 99.7 mm |
| 45T | 1.91 | 1.91 | 101.9 mm |
| 46T | 1.87 | 1.87 | 104.2 mm |
| 47T | 1.83 | 1.83 | 106.4 mm |
Shaded rows are the pinions most 1/10 2WD f1 setups run on the stock spur. Rollout at a 62 mm tire.
What pinion should I run?
Tell us your motor and track and get a starting pinion for the Exotek F1ULTRA R5 Pro, with the range racers in the class run.
Get a recommendation →Shop pinion gears at AMain →What pinion gear should I use on the Exotek F1ULTRA R5 Pro?
It depends on your motor and the track. In the 1/10 2WD f1 class, racers gear by final drive ratio: 21.5T and up near 2.19. On the F1ULTRA R5 Pro's stock 86T spur that is about 39T for 21.5T and up. Tight tracks gear down, open tracks gear up. For a starting pinion matched to your motor, use the So Dialed Pinion Recommender with the F1ULTRA R5 Pro selected.
What is the internal ratio (transmission ratio) of the Exotek F1ULTRA R5 Pro?
The F1ULTRA R5 Pro has an internal ratio of 1:1. Final drive ratio = spur ÷ pinion × 1. With the stock 86T spur, a 26T pinion gives an FDR of 3.31 and a 47T gives 1.83.
How many teeth is the stock spur gear on the Exotek F1ULTRA R5 Pro?
86 teeth. Changing the spur moves every pinion's ratio at once; most racers leave the spur and tune with the pinion.
Kit setup
Kit shock setup. Part numbers link to AMain.
- Center
- 350 cst
- Front
- 0.45 Silver #R4087 →
What shock oil does the Exotek F1ULTRA R5 Pro come with?
Out of the box the F1ULTRA R5 Pro runs 350 cst center. That is the kit setup; you will need to adjust it for your track conditions. The RC Setup App can help dial it in.
What springs does the Exotek F1ULTRA R5 Pro come with?
The kit springs are 0.45 Silver (#R4087) front. Stiffer springs suit high grip and big jumps; softer springs add grip on slick or bumpy tracks.
Setup Help
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Setup App & Race Log
Your Exotek F1ULTRA R5 Pro is in the RC Setup App
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